April 11, 2008

-[NSWindow setResizable:(BOOL)] does not exist. But, here is a way to get that effect as long as the window was resizable when created. (I don’t know of a way to make a window resizeable if it was first created unresizeable).

The basic idea is to show/hide the resizing controls, and implement delegate functions that prevent the window from being resized when the resizing controls are hidden.

setResizeIncrements “Restricts the user’s ability to resize the receiver so the width and height change by multiples of width and height increments.” So setting it to MAXFLOAT x MAXFLOAT means that the user can’t resize the window, because they won’t have a big enough screen. Note that this won’t disable the “zoom” function, although the user probably couldn’t use it with the zoom button hidden.

This approach uses slightly fewer lines of code, but it is more brittle and indirect, since it depends on the screen-size, not if the window is (visibly) resizeable. I wouldn’t use it over delegates. But here it is.